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JEEMAIN and NEET
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JEEMAIN PAST PAPERS
>>
2006
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Q)
Uncertainty in the position of an electron (mass
9.1
×
10
−
31
k
g
) moving with a velocity
300
m
s
−
1
, accurate upon
0.001
%
will be : <br> (
h
=
6.63
×
10
−
34
J
s
)
( A )
19.2
×
10
−
2
m
( B )
1.92
×
10
−
2
m
( C )
3.84
×
10
−
2
m
( D )
5.76
×
10
−
2
m
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